激光治疗时易引起眼内热膨胀，热沸腾"眼球爆炸"，激光防护眼镜有多种，哪种方式不适合（）
A.加厚式防护镜
B.吸收式防护镜
C.警告式防护镜
D.变色式防护镜
E.反射式防护镜
参考答案：A
解析：吸收式是选用一定材料做镜面，使它对某些波长的激光全吸收；警告式是当激光过量时，镜面发出警告，让人眼及时躲避；变色式是当激光超过安全阈值时通过反应，使镜面变深变黑；反射式是在镜面表面镀上多层反射介质质膜，对某些波长趋势全反射。
| Choose the best sentences from A to E in the box to fill in the dialogue. | |
| A: I'm going to Canada next month. B: 1. Canada is a beautiful country. 2. A: Because I'm going there on business. B: 3. A: Both English and French. B: That means 4. If you know either English or French. A: That's right. B: 5. A: Not really. But I'll try my best both of them.
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